Quote:
Originally Posted by kevcurr63
'...my understanding from other posts is you can use two 1N4001 diodes back to back with one reversed to serve the same purpose, is there a specific type as I require?
If anyone can point me in the right direction, as it would be greatly appreciated many thanks in advance...'
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Any diode with a drop of 0.6V or thereabouts will do. All they're for is for clipping sudden clicks that may cause acoustic shock on the more sensitive rocking armature receivers as found in 7XX series telephones.
Don't use them as a 'sticking plaster solution' for clicky dials! If you get rat-a-tat-a-tat-a-tatting when your dial rotates, it's the dial-off-normal contacts that require cleaning: the ones that shunt the receiver.